A free program for Android, by UNDERSCORE: Apps and Games.
What is it?
“WiFi Hacker Tool Simulator” is a simulation app that lets you pretend as if you’re hacking a network. This tool searches for Wi-Fi networks in your surrounding area and shows a list of them.
Choose one of the devices from the shown list, and it will automatically show you the password.
How does it work?
Once a device is selected, a progress bar will appear. You can then show your friends that you have hacked the network.
It does not actually hack Wi-Fi passwords, networks, or routers. However, you will look like you are hacking.